S
M
T
W
T
F
S
29
50°
36°
30
53°
35°
1
49°
38°
2
51°
34°
3
46°
30°
4
43°
27°
5
52°
34°
6
52°
33°
7
38°
30°
8
38°
23°
9
37°
21°
10
37°
23°
11
35°
25°
12
35°
26°
13
36°
23°
14
34°
17°
15
34°
23°
16
38°
27°
17
37°
30°
18
41°
27°
19
45°
18°
20
39°
16°
21
35°
15°
22
30°
16°
23
34°
23°
24
34°
18°
25
35°
17°
26
32°
14°
27
30°
14°
28
31°
10°
29
32°
16°
30
34°
24°
31
39°
19°
1
43°
14°
2
31°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lansing
Lansing's December 2026 forecast shows daily high temperatures ranging from 30° to 53°, with overnight lows between 10° and 38°. The average high for December is 39° with an average low of 23°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Lansing. See also: January | February | March.